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Automated System for Concrete Railroad Crosstie Transfer Length Measurement

Document Series
Research Results
Author
Federal Railroad Administration
Report Number
RR 21-17
Office
RPD-31
Subject Track
Keywords
Infrastructure, railroad ties, strain sensor, optical, transfer length, shape factor, prestressed concrete, high speed rail

Kansas State University researchers produced two, fully functional, longitudinal strain measurement and transfer length assessment devices that address specific needs of the industry. The devices are: (1) an automated computer-controlled traversing device and (2) a 6-camera stationary strain field measurement system. In addition to controlled laboratory testing, they extensively field-tested both devices in actual tie plants. Performance results are compared here both in terms of longitudinal strain profile measurement capability and in the devices’ ability to accurately assess transfer length.


Last updated: Thursday, September 2, 2021